> My hardware, my choice, period.

You can choose to not use the app.

The bank has a choice on how customers interact with it.

The government, regulating banks, and often acting as insurance for lost money, has a choice on setting required security standards.

Balancing all these is difficult.

Fair enough.

If there remains an option to still opt in to full control over my h/w at the expense of some vendors saying that I can't use my phone with them, that's good enough.